CVE-2025-21883: ice: Fix deinitializing VF in error path

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• linux linux kernel6.4 and later · before 6.6.81
• linux linux kernel6.7 and later · before 6.12.18
• linux linux kernel6.13 and later · before 6.13.6
• linux linux kernel6.14

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

• Linux Linux

  • 6.4affected
  • 8cd8a6b17d275a45e3722d0215f6115b687c8c3e and later · before 3c01102bec9592928e6b155da41cfcd5d25a2066affected · git
  • 8cd8a6b17d275a45e3722d0215f6115b687c8c3e and later · before a4880583f88deba63504ce1c8287a70d39c01378affected · git
  • 8cd8a6b17d275a45e3722d0215f6115b687c8c3e and later · before 34393fd78d7183a007eaf0090966ebedcc29bd57affected · git
  • 8cd8a6b17d275a45e3722d0215f6115b687c8c3e and later · before 79990cf5e7aded76d0c092c9f5ed31eb1c75e02caffected · git
  • before 6.4not affected · semver
  • 6.6.81 and later · up to and including 6.6.*not affected · semver
  • 6.12.18 and later · up to and including 6.12.*not affected · semver
  • 6.13.6 and later · up to and including 6.13.*not affected · semver
  • 6.14 and laternot affected · original_commit_for_fix

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
  90Now
• CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
  89Now
• CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
  85Now

Published before and after this one in the same product

• ← EarlierCVE-2025-21879Mar 27, 2025 · btrfs: fix use-after-free on inode when scanning root during em shrinking
  31Monitor
• ← EarlierCVE-2025-21882Mar 27, 2025 · net/mlx5: Fix vport QoS cleanup on error
  22Monitor
• Later →CVE-2025-21891Mar 27, 2025 · ipvlan: ensure network headers are in skb linear part
  22Monitor

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1free(dev->buf);2/* ... another thread is still running ... */3process(dev->buf);

1lock(&dev->lock);2free(dev->buf);3dev->buf = NULL;4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.